Answers

Add 70/18 and 25/40

1^st number: 3 16/18, 2^nd number: 25/40

70/18 + 25/40 is 325/72.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 18 × 20 = 360,
   70/18 = 70 × 20/18 × 20 = 1400/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   25/40 = 25 × 9/40 × 9 = 225/360
4. Add the two like fractions:
   1400/360 + 225/360 = 1400 + 225/360 = 1625/360
5. 1625/360 simplified gives 325/72
6. So, 70/18 + 25/40 = 325/72
   In mixed form: 437/72

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁷⁰/₁₈+⁵⁰/₄₀ ⁷⁰/₃₆+²⁵/₄₀ ⁷⁰/₁₈+²⁵/₈₀ ⁷⁰/₁₈+⁷⁵/₄₀ ⁷⁰/₅₄+²⁵/₄₀ ⁷⁰/₉₀+²⁵/₄₀

Add Fractions Calculator